 ... skeleton' leaf. As they grow older, however, they devour all portions of the leaf, and often eat also the petioles and tender stems. Opportunity has not been given to determine the exact length of the larval life of this insect, but judging from observations...  Annual Report - Page 267by Nebraska. State Board of Agriculture - 1892Full view - About this book
 | Commissioner of Agriculture - 1885 - 734 pages
...for fresh food, their webs are extended, until finally the entire plant is covered. The young larvae devour only the surface and substance of the leaf...determine the exact length of the larval life of this insect, but judging from observations made, this cannot greatly exceed a week. Parties living in the... | |
 | United States. Department of Agriculture - 1885 - 760 pages
...extended, until finally the entire plant is covered. The young larvae devour only the surface and enbstance of the leaf on the side where they are, leaving the...determine the exact length of the larval life of this insect, but judging from observations made, this cannot greatly exceed a week. Parties living in the... | |
 | Washintong Government Printing Office - 1885 - 746 pages
...for fresh food, their webs are extended, until finally the entire plant is covered. The young larva} devour only the surface and substance of the leaf...they devour all portions of the leaf, and often eat als« the petioles and tender stems. Opportunity has not been given to determine the exact length of... | |
 | United States. Congress. House - 1885 - 778 pages
...for fresh food, their webs are extended, until finally the entire plant is covered. The young lame devour only the surface and substance of the leaf on the. side where they are, leaving the veins and tbe opposite epidermis untouched, producing a ' skeleton ' leaf. As they grow older, however, they... | |
 | Nebraska. State Board of Agriculture - 1891 - 304 pages
...for fresh food their webs are extended until finally the entire plant is covered. The young larvae devour only the surface and substance of the leaf...determine the exact length of the larval life of this insect, but, j udging from observations made, this cannot greatly exceed a week. Parties living in... | |
 | Herbert Myrick - 1897 - 182 pages
...beet and transforms to the chrysalis stage, in which it remains from one to two weeks. The young worms devour only the surface and substance of the leaf on the side where they are, leaving the veins and opposite epidermis untouched, producing a skeleton leaf. Where the tops are not intended to be fed... | |
 | University of Nebraska (Lincoln campus). Agricultural Experiment Station - 1891 - 330 pages
...for fresh food their webs are extended until finally the entire plant is covered. The young larvae devour only the surface and substance of the leaf...the side where they are, leaving the veins and the oppositeepidermis untouched, producing a "skeleton" leaf. As they grow older, however, they devour... | |
| |
